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Double line pull


AndyO
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Not exactly what you were asking but the theory is the same

 

winch%20effect_zpsfyct74fd.jpg

 

The last example is not correct, in a recovery situation where one of the vehicles is the intended load that yes it is correct, but here we are talking about the load being the object to the right and therefore this image depicts another 2:1 pull. This is assuming that both vehicles remain static, the force applied at the snatch block is double the pull of the winch.

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Cheers for the input guys.

I had meant to take some pics of the winch in the shed with where I had thought about attaching to but time was against me. Next week!

The more I think about it having a solid anchor is the key as the tractor only weighs 1500kg with the winch and on a double pull is likely to start shifting about.

Eddie good thinking about the draw bar sadly our winch like many modern ones has a solid butt plate but I wonder if running a chain from the draw bar under the plate for the line to attach to would work or if the chain would be compromised with the load on top?

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Cheers for the input guys.

I had meant to take some pics of the winch in the shed with where I had thought about attaching to but time was against me. Next week!

The more I think about it having a solid anchor is the key as the tractor only weighs 1500kg with the winch and on a double pull is likely to start shifting about.

Eddie good thinking about the draw bar sadly our winch like many modern ones has a solid butt plate but I wonder if running a chain from the draw bar under the plate for the line to attach to would work or if the chain would be compromised with the load on top?

 

 

Only problem I see with running chain under the butt plate of the winch is that as you apply pressure onto the winch the chain could/will start to lift the butt plate out of the ground hence loosing your anchor. If using a chain bare in mind to use a strong enough chain and check for damage as with pressures involved you don't want anything to let go while under full load

 

Steve

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Only problem I see with running chain under the butt plate of the winch is that as you apply pressure onto the winch the chain could/will start to lift the butt plate out of the ground hence loosing your anchor. If using a chain bare in mind to use a strong enough chain and check for damage as with pressures involved you don't want anything to let go while under full load

 

Steve

 

I agree, plus you'r putting some weird stresses on the 3PL. Either weld a suitable attachment to the winch itself or use an adjacent object...

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Problem with attaching to the tractor draw bar is your placing pull directory onto the tractor whereas using another point as discussed or back onto the winch itself will place very little pull onto the tractor as long as the but plate is correctly and securely anchored as you'd be surprised how little force is transferred into the arms once it's dug in.

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I agree, plus you'r putting some weird stresses on the 3PL. Either weld a suitable attachment to the winch itself or use an adjacent object...

 

Yes my thoughts too, If there was a slot in the butt plate you could pass something through slightly higher than the pickup hitch it would be perfect

as it would be trying to force the plate down, but every winch is different and all gets little busy with drive and pulleys where you'd ideally like to be.

 

I'd say on a small winch setup simply get something properly welded on, and if you don't want a projection on the butt plate, get one each side and use a bridle on it to spread the load a bit more.

When you start doubling back the larger winches you need to have a serious think about any attachment point, the loads can obviously stack up quickly, hence why I think manufacturers shy away from it.

 

The Chain/Sling around the base of the butt plate is as good a suggestion as any for the very occasional time something more suitable can't be rigged up.

 

 

Eddie.

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I think personally I would have a thicker piece of plate welded to the back of the butt plate and then drill through and bolt on a heavy recovery eye. The advantage to that is that if your double line pulling is very rare you could simply screw it on when needed. That would keep any protrusions out of the way until you needed them - the eye could just live in the tractor somewhere or be tied to the winch even.

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